virtual Double_t TrackStep() const { return fTrackStep; };
virtual Double_t TrackLength() const { return 0.0; };
virtual Double_t TrackTime() const { return 0.0; };
virtual Double_t TrackStep() const { return fTrackStep; };
virtual Double_t TrackLength() const { return 0.0; };
virtual Double_t TrackTime() const { return 0.0; };